Dont forget the spark plugs and wires, went with Bosch Platinum +4 plugs with Bosch premium wires, noticably increase in throttle response and power, all for under $100 also a Venom 400, it is like a chip, but you can use it with another chip, will help even more, can turn it on and off if smog regulations effect you, between 300-400 bucks though, a little out of your range, but it does help

My 98 TJ is getting a new Borla header and cat back system. Has anyone else had problems with their stock manifolds cracking?....what's the f'in problem. From what I hear it's a quite common problem. Anyone out there have a header and cat back system on their Jeep? If so how do you like it.

I'm just wondering once I put the Borla header and cat back system on how loud it's going to be. If it's a nice low rumble then cool....but I don't want it to sound like I have cherry bombs on it. I guess there is only one way to find out.

dynomax doesnt suck, as long as you clean it off, it wont rust, you can get borla headers for 260 at truckperformance.com if anyone is really looking for performance ideas go to this site: www.jeep4.0performance.4mg.com it has tons of ideas to spruce up a 4.0